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Unveiled magnetic transition in Na battery material: mu+SR study of P2-Na0.5VO2
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2015 (English)In: RSC Advances, ISSN 2046-2069, Vol. 5, no 24, 18531-18537 p.Article in journal (Refereed) Published
Abstract [en]

We have investigated the microscopic magnetic nature of a novel Na battery material, P2-Na0.5VO2, in which V ions form a two-dimensional triangular lattice, by means of muon-spin rotation and relaxation (mu+SR) measurements down to 50 mK. Although magnetization measurements indicated the presence of an antiferromagnetic transition at 13 K, the internal magnetic field due to the formation of magnetic order appears not at 13 K but at 2 K. Furthermore, the magnetic order is found to have a wide field distribution even at 50 mK. Such wide field distribution is reasonably explained by a combination of multiple muon sites and the formation of a long-range magnetic order, while the reliable spin structure is still unknown.

Place, publisher, year, edition, pages
2015. Vol. 5, no 24, 18531-18537 p.
Keyword [en]
Charged particles, Electric batteries, Antiferromagnetic transition, Battery materials, Internal magnetic fields, Long range magnetic order, Magnetic transitions, Magnetization measurements, Muon spin rotation and relaxation, Triangular lattice
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-163489DOI: 10.1039/c5ra00400dISI: 000349999200044ScopusID: 2-s2.0-84923340224OAI: diva2:800548

QC 20150407

Available from: 2015-04-07 Created: 2015-04-07 Last updated: 2015-04-07Bibliographically approved

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Månsson, Martin
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Material Physics, MF
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